Nutrition significantly influences brain health by providing essential nutrients that support cognitive function. Key nutrients like omega-3 fatty acids, antioxidants, and vitamins play a critical role in maintaining neurotransmitter balance and protecting the brain from oxidative stress. Diets rich in fruits, vegetables, whole grains, and healthy fats can enhance concentration, memory, and overall mental wellness. Moreover, nutrient deficiencies can negatively impact mood and cognitive performance, highlighting the importance of a balanced diet for optimal brain health throughout one's life.